/**
* Copyright (c) 2000-present Liferay, Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or modify it under
* the terms of the GNU Lesser General Public License as published by the Free
* Software Foundation; either version 2.1 of the License, or (at your option)
* any later version.
*
* This library is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
* details.
*/
package com.liferay.frontend.js.loader.modules.extender.internal;
import aQute.lib.converter.Converter;
import com.liferay.osgi.util.ServiceTrackerFactory;
import java.util.Collection;
import java.util.Map;
import java.util.concurrent.ConcurrentSkipListMap;
import javax.servlet.ServletContext;
import org.osgi.framework.ServiceReference;
import org.osgi.service.component.ComponentContext;
import org.osgi.service.component.annotations.Activate;
import org.osgi.service.component.annotations.Component;
import org.osgi.service.component.annotations.Deactivate;
import org.osgi.util.tracker.ServiceTracker;
import org.osgi.util.tracker.ServiceTrackerCustomizer;
/**
* @author Carlos Sierra Andrés
*/
@Component(immediate = true, service = JSLoaderModulesTracker.class)
public class JSLoaderModulesTracker
implements ServiceTrackerCustomizer
<ServletContext, ServiceReference<ServletContext>> {
@Activate
public void activate(
ComponentContext componentContext, Map<String, Object> properties)
throws Exception {
if (_serviceTracker != null) {
_serviceTracker.close();
}
setDetails(Converter.cnv(Details.class, properties));
_serviceTracker = ServiceTrackerFactory.open(
componentContext.getBundleContext(),
"(&(objectClass=" + ServletContext.class.getName() +
")(osgi.web.contextpath=*))",
this);
}
@Override
public ServiceReference<ServletContext> addingService(
ServiceReference<ServletContext> serviceReference) {
String contextPath = (String)serviceReference.getProperty(
"osgi.web.contextpath");
JSLoaderModule jsLoaderModule = new JSLoaderModule(
_details.applyVersioning(), serviceReference.getBundle(),
contextPath);
_jsLoaderModules.put(serviceReference, jsLoaderModule);
_lastModified = System.currentTimeMillis();
return serviceReference;
}
public Collection<JSLoaderModule> getJSLoaderModules() {
return _jsLoaderModules.values();
}
public long getLastModified() {
return _lastModified;
}
public long getTrackingCount() {
return _serviceTracker.getTrackingCount();
}
@Override
public void modifiedService(
ServiceReference<ServletContext> serviceReference,
ServiceReference<ServletContext> trackedServiceReference) {
removedService(serviceReference, trackedServiceReference);
addingService(serviceReference);
}
@Override
public void removedService(
ServiceReference<ServletContext> serviceReference,
ServiceReference<ServletContext> trackedServiceReference) {
_jsLoaderModules.remove(serviceReference);
_lastModified = System.currentTimeMillis();
}
@Deactivate
protected void deactivate() {
_serviceTracker.close();
_serviceTracker = null;
}
protected void setDetails(Details details) {
_details = details;
}
private volatile Details _details;
private final Map<ServiceReference<ServletContext>, JSLoaderModule>
_jsLoaderModules = new ConcurrentSkipListMap<>();
private volatile long _lastModified = System.currentTimeMillis();
private ServiceTracker<ServletContext, ServiceReference<ServletContext>>
_serviceTracker;
}